Prince Albert II and his sisters, Princess Stephanie and Princess Caroline, issued a statement saying the film about their mother -- the former Grace Kelly -- contained major historical inaccuracies and "purely fictional scenes."

The royals rebuffed a report in Paris Match magazine claiming the palace supported the film, titled "Grace of Monaco."

The movie stars Nicole Kidman as the Hollywood icon, who married Monaco's Prince Rainier II in 1956. The princess died in 1982, aged 52.

The movie is expected to chronicle a 6-month period in 1962, when France and Monaco were at odds over the city-state's standing as a tax haven. Kelly, then 33, worked behind the scenes to save Monaco from a coup.

The statement said the family had "absolutely no association" with the film. It said the filmmakers had ignored the palace's requests for changes to the script.